[Speex-dev] Acoustic echo cancellation

Steve Underwood steveu at coppice.org
Tue Jun 21 18:05:16 PDT 2011

On 06/22/2011 04:57 AM, Arun Raghavan wrote:
> On Tue, 2011-06-21 at 11:39 -0700, Arun Raghavan wrote:
> [...]
>> I'm also running this on x86 (x86_64, technically), and it's all
>> floating-point, so I guess this is a regression somewhere. Will try to
>> see if I can run it without any optimisations if possible, which I
>> assume should serve as an adequate reference.
> Surprisingly, if I use -O0 instead of -O2, I see a difference in the
> output. Nothing very observable in Audacity, but the actual output
> definitely differs.
If you use a floating point build the output is likely to change with 
the optimisation level selected, the compiler version, and maybe even 
the day of the week :-)

> Still trying to figure out why they're both so different from your run
> from 5 years ago, though.

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